linux 虛擬機連不上網絡

1. 關閉 NetworkManger 服務

systemctl  stop  NetworkManager

2. 禁止開機啓動

systemctl  disable  NetworkManager

3. 重啓網絡服務

systemctl start network.service

關閉防火牆

解決CentOS7關閉/開啓防火牆出現Unit iptables.service failed to load: No such file or directory.

systemctl stop firewalld
systemctl mask firewalld

1. yum install iptables-services
2. systemctl enable iptables
3. systemctl stop iptables
4. service iptables save